<template>
  <div class="top-category">
    <div class="container">
      <!-- 面包屑 -->
      <XtxBread>
        <XtxBreadItem to="/">首页</XtxBreadItem>
        <Transition name="fade-right" mode="out-in">
          <XtxBreadItem v-if="jsList" :key="jsList.id">{{ jsList.name }}</XtxBreadItem>
        </Transition>
      </XtxBread>
      <!-- 轮播图 -->
      <XtxCarousel :sliders="sliders" style="height:500px" autoPlay />
      <!-- 所有二级分类 -->
      <div class="sub-list" v-if="jsList && jsList.children">
        <h3>全部分类</h3>
        <ul>
          <li v-for="item in jsList.children" :key="item.id">
            <a href="javascript:;">
              <img v-lazy="item.picture">
              <p>{{ item.name }}</p>
            </a>
          </li>
        </ul>
      </div>
      <!-- 分类关联商品 -->
      <div class="ref-goods" v-for="item in subList" :key="item.id">
        <div class="head">
          <h3>- {{ item.name }} -</h3>
          <p class="tag">商品多样，品质优先</p>
          <XtxMore :path="`/category/sub/${item.id}`" />
        </div>
        <!-- 主内容商品 -->
        <div class="body">
          <GoodsItem v-for="g in item.goods" :key="g.id" :goods="g" />
        </div>
      </div>
    </div>
  </div>
</template>
<script  lang="ts" setup>
import GoodsItem from './goods-item.vue'
import { findBanner } from "../../api/home";
import { findTopCategory } from '../../api/category'
import { ref, computed, watch } from "vue";
import categoryStore from '../../store/index'
import { useRoute } from "vue-router";
// 轮播图数据
const sliders = ref([])
findBanner().then((data: any) => {
  sliders.value = data.result
})
// 面包屑+所有分类数据
const { category } = categoryStore()
const route = useRoute()
const jsList = computed(() => {
  return category.list.find(item => item.id === route.params.id)
})
// 推荐商品
const subList = ref([])
const getSubList = () => {
  findTopCategory(route.params.id).then((data: any) => {
    subList.value = data.result.children
  })
}
// 根据路由的id变化来获取商品数据
watch(() => route.params.id, (newVal) => {
  // newVal && getSubList()
  // 只要当前的路由等于 / category / ${ route.params.id }才发请求，避免跳转到二级类目页触发
  if (newVal && `/category/${route.params.id}` === route.path) getSubList()
}, { immediate: true })

</script>
<style lang="less" scoped>
@import '../../assets/styles/mixins.less';
@import '../../assets/styles/variables.less';

.top-category {
  h3 {
    font-size: 28px;
    color: #666;
    font-weight: normal;
    text-align: center;
    line-height: 100px;
  }

  .sub-list {
    margin-top: 20px;
    background-color: #fff;

    ul {
      display: flex;
      padding: 0 32px;
      flex-wrap: wrap;

      li {
        width: 168px;
        height: 160px;

        a {
          text-align: center;
          display: block;
          font-size: 16px;

          img {
            width: 100px;
            height: 100px;
          }

          p {
            line-height: 40px;
          }

          &:hover {
            color: @xtxColor;
          }
        }
      }
    }
  }
}

.ref-goods {
  background-color: #fff;
  margin-top: 20px;
  position: relative;

  .head {
    .xtx-more {
      position: absolute;
      top: 20px;
      right: 20px;
    }

    .tag {
      text-align: center;
      color: #999;
      font-size: 20px;
      position: relative;
      top: -20px;
    }
  }

  .body {
    display: flex;
    justify-content: flex-start;
    flex-wrap: wrap;
    padding: 0 65px 30px;
  }
}
</style>
